Jennifer is trying to determine the blood type of her parents for biology class. she knows that her blood type is o. after asking her mother, she finds out that her mother's blood type is a. however, her father cannot remember his blood type. which of the following blood types could her father have?

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )